Question

1. what makes dna antiparallel?
2. concerning proteins:

a. the protein monomer is:
b. how many amino acids are there?
c. draw and label a basic amino acid in the box to the right.
d. what part of the amino acid differen
e. what is the directionality of a protein

Explanation:

1. DNA is antiparallel due to the orientation of its two strands. The sugar - phosphate backbones run in opposite 5' - 3' directions. One strand has a 5' - to - 3' orientation and the other has a 3' - to - 5' orientation.

2a. Proteins are polymers made of amino acid monomers.
2b. There are 20 standard amino acids that are used in protein synthesis in most organisms.
2d. Amino acids have a common structure with an amino group, a carboxyl group, a hydrogen atom, and an R - group. The R - group is what varies among different amino acids, giving each its unique properties.

Answer:

1. The 5' - 3' orientation of one strand and 3' - 5' orientation of the other strand in the sugar - phosphate backbone.

2a. Amino acid
2b. 20
2d. R - group